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Home Projects With Xavious

PostPosted: Sat Dec 08, 2007 4:01 pm
by Xavious
Welcome to Home Projects With Xavious. Today we will be constructing the Leyden Jar.

First invented by the Dutch scientist Pieter van Musschenbroek and named after the University of Leiden, this device was used to conduct early experiments concerning electricity. The Leyden Jar works as a simple capacitor. It stores an electric charge inside of it.

The materials needed for this modern day Leyden Jar are:
2 Lock Nuts
1 Bolt
1 Washer
1 PVC Pipe
2 PVC Pipe End Caps
Aluminum Foil
Copper Wire

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Begin by screwing the first lock nut onto the threaded bolt. Once all the way down, take the copper wire and coil it around the bolt below the lock nut. Secure it with glue or tape. When finished it should look like so:

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Next, prepare one of the two end caps for assembly by drilling a hole as close to the center as possible and make sure that the bolt will have a tight fit. Place the bolt through the underside and place the washer on the top side followed by the second lock nut. Tighten down the lock nut as far as possible to prevent loosening.

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Next up begin putting the aluminum foil on the inside of the PVC Pipe. In this experiment I used Aluminum tape.

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Secure the final endcap to the bottom and the endcap with the bolt onto the pipe as well. Thus we have a Leyden Jar.

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NOTE: This device has not been field tested yet and strength of the charge it can hold is as of yet unknown or whether or not it can even hold a charge. On Monday this device will be taken to be tested unless it is tested prior to then. Also, it is advisable but not necessary to secure any gaps or cracks in the pipe segments with electrical tape.

EDIT: The device has been tested and it can indeed hold a charge although the charge detected was very weak. The exact strength of the maximum charge is unknown.

Next week on Home Projects With Xavious we will be exploring the refinement of Plutonium and drawbacks of nuclear energy. Until then remember, never try washing a cat by throwing it in the toilet with soap and then flush.

Re: Home Projects With Xavious

PostPosted: Sun Jan 06, 2008 12:03 am
by Xavious
Welcome once again to Home Projects With Xavious. Today, we will be constructing an LED Display in which the LED's flash in synchronization to audio impulse. In layman's terms music plays and light flashes on and off. Shown below is a simple diagram of how the display works.

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Numerical values were left out since they can vary from system from system. Although try to max the power supply voltage to the total voltage consumed in the circuit. The P2 Plug is a plug found commonly in headsets, head phones, etc... These can be bought at radioshack as the 3.5mm stereo jack or salvaged from old headphones or other materials.The positive and negative signs indicate which part the parts of the TIP31 will lead to. The TIP31 is a type of transistor used that, essentially, causes the LED's to flash from the audio impulse.

With the heatsink down (as pictured), on the left is the base, the right is the emitter, and the center is the collector. The positive wire from the batteries (which is connected in series to the LED's) leads to the collector. The base of the TIP31 leads to the positive wire of the P2 Plug. The negative wire leads to the emitter and additionally the emitter leads to the negative wire of the P2 Plug. The P2 Plug is then connected to a CD player or other media device. More information will be added soon!